SAN FRANCISCO, CA - SEPTEMBER 05: A billboard featuring former San Francisco 49ers quaterback Colin Kaepernick is displayed on the roof of the Nike Store on September 5, 2018 in San Francisco, California. Nike launched an ad campaign to commemorate the 30th anniversary of its iconic "Just Do It' motto that features controversial former NFL quarterback Colin Kaepernick and a message that says "Believe in something. Even if it means sacrificing everything." (Photo by Justin Sullivan/Getty Images)